﻿using UnityEngine;
using System.IO;
using System;
#if UNITY_STANDALONE_WIN
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class OpenFileName
{
    public int structSize = 0;
    public IntPtr dlgOwner = IntPtr.Zero;
    public IntPtr instance = IntPtr.Zero;
    public String filter = null;
    public String customFilter = null;
    public int maxCustFilter = 0;
    public int filterIndex = 0;
    public String file = null;
    public int maxFile = 0;
    public String fileTitle = null;
    public int maxFileTitle = 0;
    public String initialDir = null;
    public String title = null;
    public int flags = 0;
    public short fileOffset = 0;
    public short fileExtension = 0;
    public String defExt = null;
    public IntPtr custData = IntPtr.Zero;
    public IntPtr hook = IntPtr.Zero;
    public String templateName = null;
    public IntPtr reservedPtr = IntPtr.Zero;
    public int reservedInt = 0;
    public int flagsEx = 0;
}

public class OpenFileWindowDll
{
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
    public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
    public static bool GetOpenFileName1([In, Out] OpenFileName ofn)
    {
        return GetOpenFileName(ofn);
    }
}

public class SaveFileWindowDll
{
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
    public static extern bool GetSaveFileName([In, Out] SaveFileDlg ofn);
    public static bool GetSaveFileName1([In, Out] SaveFileDlg ofn)
    {
        return GetSaveFileName(ofn);
    }
}
public class SaveFileDialog
{
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
    public static extern bool GetSaveFileName([In, Out] SaveFileDlg ofd);
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class SaveFileDlg : OpenFileName
{

}

public class NewOpenFileName
{
    public static string SaveVoxelFile()
    {
        SaveFileDlg pth = new SaveFileDlg();
        pth.structSize = System.Runtime.InteropServices.Marshal.SizeOf(pth);
        //pth.filter = "txt (*.txt)";
        pth.filter = "Riovox\0*.riovox\0Voxel\0*.vox\0\0";
        pth.file = new string(new char[256]);
        pth.maxFile = pth.file.Length;
        pth.fileTitle = new string(new char[64]);
        pth.maxFileTitle = pth.fileTitle.Length;
        pth.initialDir = Application.dataPath;  // default path  
        pth.title = "保存项目";
        pth.defExt = "Riovox";
        pth.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;
        //if (SaveFileDialog.GetSaveFileName(pth))
        //{
        //    string filepath = pth.file;//选择的文件路径;  
        //    Debug.Log(filepath);
        //}
        if (SaveFileDialog.GetSaveFileName(pth))
        {
            return pth.file;
        }
        else
        {
            return null;
        }
    }
    public static string OpenVoxelFile()
    {
        OpenFileName ofn = new OpenFileName();

        ofn.structSize = Marshal.SizeOf(ofn);

        ofn.filter = "Riovox\0*.riovox\0Voxel\0*.vox\0\0";

        ofn.file = new string(new char[256]);

        ofn.maxFile = ofn.file.Length;

        ofn.fileTitle = new string(new char[64]);

        ofn.maxFileTitle = ofn.fileTitle.Length;

        ofn.title = "Open Voxel";

        ofn.defExt = "VOX";//显示文件的类型  
                           //注意 一下项目不一定要全选 但是0x00000008项不要缺少  
        ofn.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200 | 0x00000008;//OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT|OFN_NOCHANGEDIR  

        if (OpenFileWindowDll.GetOpenFileName(ofn))
        {
            return ofn.file;
        }
        else
        {
            return null;
        }
    }

}

#endif